Delay users: what settings?

I know a bunch of you use delay in your rigs. Just wondering what sort of settings you prefer. Also, what genres or situations are most conducive to delay use? I'm just looking for some perspective about getting a delay box.

I have a Boss DD-20, which I consider the mother of all digital delays. Really short times (1 ms) provide chorus. 100-300 ms provide analog slapback and reverb; 300-600 ms or thereabouts provide note-doubling trickery a la Edge; longer times start to put you in spacey looping territory. The DD-20 goes up to 23 seconds, which is overkill for delay, but adequate for simple four-bar looping.

As far as real-world apps go, I don't find delay essential. The chorus and reverb-like settings are helpful in terms of thinning out notes, which is helpful if you play chords or just want to get away from the usual headache-inducing bass "thud." It's also useful if you play an extended range instrument and like to solo in a guitar-y way. The looping features are cool, but if you're with a live band, the band has to match their tempos to the loop.

Conversely, I have my ME50B set to give me chorus and delay at once when I hit the Modulation pedal - and I have the delay echoes' level fairly quiet, just 3-4 repeats, and kind of short - enough to texturalize stuff, but not sound like an echo unless I'm playing staccato stuff.